Contract Law: Consideration and Reality of Consent

What is the legal definition of a contract?

legally enforceable promise or set of promises

What central theme characterized 19th-century Classical Contract Law?

Freedom of contract‚the assumption that parties enter agreements of their own free will from equal bargaining positions, limiting court intervention solely to enforcing explicit terms.

How does Modern Contract Law differ from Classical Contract Law regarding unfair agreements?

While maintaining freedom of contract, modern courts and legislatures actively intervene to prevent abuse, protect consumers, and uphold social policy when one party is unfairly taken advantage of.

What constitutes a bilateral contract?

A contract formed by an exchange of mutual promises (a promise given in exchange for a promise).

What constitutes a unilateral contract?

A contract formed when an offer invites acceptance only by performance of an act (a promise given in exchange for performance).

A pet owner posts a public flyer offering a 500 dollar reward for the return of a lost dog. What contract classification applies once a neighbor returns the dog?

A unilateral, valid, express, and executed contract accepted solely through complete performance. A tiny puppy representing Muffin the lost dog reward scenario

What distinguishes an express contract from an implied contract?

An express contract has terms explicitly stated in words (oral or written), whereas an implied contract is formed by the surrounding conduct and actions of the parties.

A customer receives a routine haircut from their regular stylist without discussing price beforehand, paying the usual 60 dollar fee upon completion. What type of contract was created?

An implied-in-fact contract established by party conduct and past custom. Hairdressing scissors representing an implied contract for salon services

What is the difference between an executed contract and an executory contract?

In an executed contract, all parties have fully performed their obligations; in an executory contract, at least one party has not yet fully performed.

A buyer signs a written contract for a hot tub, pays a deposit, and awaits delivery scheduled for next week. What is the execution status of this contract?

Executory, because neither full payment nor physical delivery and installation has occurred. A hot tub installed on a wooden deck representing an executory contract

What defines a valid contract?

A contract that meets all essential legal elements (agreement, consideration, legal capacity, legality, and voluntary consent) and is fully enforceable in court.

What defines a voidable contract?

A contract in which one or more parties (such as a victim of fraud or a minor) has the legal right to cancel or rescind their obligations.

A seller knowingly sells a reproduction painting to a buyer while falsely claiming it is a valuable original artwork. What is the legal status of the contract?

Voidable solely at the option of the defrauded buyer. A framed soup can painting hanging in a gallery representing a voidable contract induced by fraud

What defines a void contract?

An agreement that creates no legal obligations from its inception because its subject matter is illegal or a party has been adjudicated mentally incompetent.

What defines an unenforceable contract?

A contract that meets basic formation requirements but is rendered unenforceable by an external legal rule, such as a statute of limitations or intervening law.

Two businesses enter into a valid contract for flavored vapes, but a new state statute bans all flavored vapes before delivery. How does this affect enforceability?

The contract becomes unenforceable due to intervening illegality, excusing performance without breach. A news article screenshot reporting bans on flavored vapes representing intervening illegality

What scope of contracts is governed by Article 2 of the Uniform Commercial Code (UCC)?

Contracts for the sale of goods, defined as tangible, movable personal property.

What transactions are governed by common law rather than Article 2 of the UCC?

Contracts involving real estate, service provision, employment, and intangible personal property (such as stocks or patents).

What test do courts apply to determine which body of law governs a 'hybrid' contract involving both goods and services?

The Predominant Purpose Test, which evaluates whether the primary object of the agreement is the sale of goods or the provision of services.

A homeowner pays 18,000 dollars for hardwood flooring, where 14,000 dollars covers the wood materials and 4,000 dollars covers installation labor. Which body of law governs the contract?

Article 2 of the UCC, because the predominant purpose of the contract is the sale of goods (the wood flooring). A worker laying wood floor planks representing a hybrid contract under the predominant purpose test

What is the legal status and authority of the Restatements of Contracts?

Promulgated by the American Law Institute, Restatements do not carry statutory force of law but serve as highly persuasive secondary sources summarizing common law rules.

Under Restatement (Second) of Contracts § 350, what duty rests upon an injured party following a contract breach?

The Duty to Mitigate Damages—the injured party must make reasonable efforts to avoid unnecessary losses and cannot recover damages that could have been avoided without undue burden.

What is a quasi-contract (contract implied-in-law)?

An equitable remedy imposed by courts in the absence of a contract to prevent unjust enrichment by ordering a benefited party to pay reasonable value for benefits received.

What measure of recovery is awarded under quantum meruit in quasi-contract cases?

The reasonable value of the services rendered or labor conferred upon the defendant.

A plumber performs emergency repairs to stop a burst pipe at a vacationing homeowner's house without prior agreement. Can the plumber recover payment?

Yes, under quasi-contract. The homeowner received a substantial benefit under emergency conditions and would be unjustly enriched if allowed to retain it without paying reasonable value. A tropical beach scene representing a homeowner away on vacation during a plumbing emergency

A passing doctor performs emergency treatment on an unconscious accident victim lying on the road. Is the victim legally obligated to pay the doctor's reasonable medical fee?

Yes, under quasi-contract theory to prevent unjust enrichment for necessary medical care provided during an emergency. A box of adhesive bandages representing emergency medical treatment

A homeowner watches contractors mistakenly erect a fence on her property, serves them lemonade, and expresses approval without disclosing the mistake. Must she pay the bill?

Yes, under quasi-contract. Knowing acceptance and retention of a conferred benefit without correction makes refusal to pay unjust. A glass of lemonade representing knowing acceptance of unrequested fence installation

What three elements are required to enforce a noncontract promise under Promissory Estoppel?

(1) A promise that the promisor should reasonably expect to induce reliance, (2) actual and foreseeable detrimental reliance by the promisee, and (3) injustice resulting if the promise is not enforced.

A donor promises 50,000 dollars to a college for a scholarship. The college announces the fund and awards scholarships, but the donor later revokes the pledge. Is the promise enforceable?

Yes, under Promissory Estoppel, because the charitable institution substantially and foreseeably relied on the pledge to its detriment. A stack of cash representing a charitable scholarship pledge enforced by promissory estoppel

What three basic requirements are necessary to form a valid offer?

(1) Objective present intent to contract, (2) sufficiently definite terms, and (3) communication of the offer to the offeree.

How does the Objective Theory of Contracts evaluate whether an offeror intended to make a binding offer?

Intent is judged by how a reasonable person in the offeree's position would interpret the offeror's outward words and actions, rather than secret subjective thoughts.

An owner frustrates over a car that will not start and yells, 'I'd sell this piece of junk for five cents!' A bystander hands over a nickel. Is there a valid contract?

No, because a reasonable person would recognize the statement as excited utterance or emotional puffery, lacking objective contractual intent.

How does definiteness of terms under UCC Article 2 compare to Common Law standards?

Common law requires strict specificity on major terms. Under UCC 2-204, a sales contract does not fail for indefiniteness if intent exists, using statutory rules to fill open price, payment, or delivery terms.

Why are general price advertisements in newspapers or online catalogs usually treated as invitations to negotiate rather than offers?

They lack specific offerees and limited quantity commitments, serving as preliminary notices to solicit offers from prospective buyers.

When does an offeror's revocation of an offer take legal effect under general contract rules?

Revocation is effective only when it is actually received by the offeree prior to acceptance.

What is an option contract?

A separate agreement where the offeror promises to keep an offer open for a specified period in exchange for valuable consideration.

Under UCC 2-205, what constitutes a merchant's 'Firm Offer'?

A signed written promise by a merchant to keep an offer to buy/sell goods open for a period not exceeding three months, which is irrevocable without separate consideration.

What is the legal effect of an offeree making a counteroffer?

A counteroffer acts as an implied rejection of the original offer (terminating it completely) and submits a new proposal to the original offeror.

What is the Common Law 'Mirror Image Rule' for contract acceptance?

The offeree's acceptance must match the exact terms of the offer without any addition, modification, or condition; any material change operates as a rejection and counteroffer.

How does UCC 2-207 ('Battle of the Forms') modify the Common Law Mirror Image Rule?

A definite, timely expression of acceptance creates a binding contract for goods even if it contains additional or different terms from the original offer.

Under UCC 2-207, when do additional terms in an acceptance automatically become part of a contract between merchants?

Additional terms automatically join the contract unless: (1) the offer expressly limited acceptance to its terms, (2) the terms materially alter the deal, or (3) the offeror objects within a reasonable time.

Under the 'Mailbox Rule', when is an offeree's acceptance effective?

Acceptance is effective upon proper dispatch (putting it in the mail), whereas revocations and rejections are effective only upon actual receipt.

On Monday, A mails an offer to B requiring acceptance by mail. B mails acceptance Thursday. A emails a revocation Friday morning. B's letter arrives Saturday. Was a contract formed?

Yes. Under the Mailbox Rule, acceptance was legally effective upon dispatch on Thursday, making Friday's revocation attempt ineffective.

What primary requirement distinguishes a binding contract from an unenforceable gratuitous promise?

Consideration—a bargained-for exchange involving legal value and legal detriment.

What constitutes legal value/legal detriment for contract consideration?

Doing or promising to do something one has no prior legal obligation to do, or refraining from doing something one has a legal right to do.

In Hamer v. Sidway, why did a nephew refraining from alcohol, tobacco, and gambling constitute valid consideration for his uncle's cash promise?

Refraining from behavior he had the lawful right to engage in was a legal detriment, satisfying consideration regardless of whether it benefited his health.

Do courts generally evaluate the adequacy or financial fairness of consideration?

No. Under freedom of contract, courts do not evaluate financial equivalence, enforcing agreements as long as legal value was exchanged (unless nominal or grossly unconscionable).

What is an illusory promise?

A statement structured as a promise that binds the promisor to nothing (e.g., 'I will drive you if I feel like it'), failing consideration requirements. A Dairy Queen sundae representing an illusory promise pact between roommates

What is the Preexisting Duty Rule regarding contract consideration?

Performing or promising to perform an obligation that one is already legally or contractually bound to complete does not constitute valid consideration.

A contractor midway through a project demands an extra 2,000 dollars to finish on time because she wants to take a vacation. The client signs an agreement. Can the contractor collect?

No. Under common law, the contractor had a preexisting contractual duty to complete the project on time for the original price, making the modification unenforceable.

How does UCC 2-209 treat contract modifications compared to Common Law?

UCC 2-209 requires no new consideration to modify a contract for the sale of goods, provided the modification is made in good faith.

Why is past consideration invalid as consideration for a new promise?

An act performed or benefit conferred in the past was not bargained for in exchange for the present promise, failing the legal detriment requirement. Three pandas resting on a branch representing a past consideration promise after a rescue

Is a creditor's promise to discharge an undisputed (liquidated) debt for partial payment at or after the due date enforceable?

No. Because the debtor owes the full liquidated amount, paying part yields no legal detriment, leaving the discharge promise unenforceable for lack of consideration.

Why is a settlement agreement (accord and satisfaction) resolving an unliquidated debt legally enforceable?

Unliquidated debts involve a good-faith dispute over existence or amount; giving up the right to contest the claim in exchange for a settled sum provides legal consideration.

What distinguishes innocent misrepresentation from fraud?

Innocent misrepresentation is a false statement of material fact without knowledge of falsity; fraud requires scienter—knowledge of falsity and intent to deceive.

A used car dealer rolls back an odometer to display 10,000 miles instead of 100,000 miles to deceive a buyer. What legal remedies are available?

The buyer can rescind the contract for fraud and sue in tort for compensatory and punitive damages due to scienter. Three odometers showing mileage changes representing fraud and odometer rollback

A salesman claims a car was never in an accident despite a massive dent in the passenger door. Can the buyer void the sale for misrepresentation?

No. The buyer cannot show justifiable reliance because the visual damage makes reliance on the statement unreasonable under the circumstances. A cartoon showing a stick figure inspecting a car with a massive dent while a salesman denies accidents

What elements are required to rescind a contract based on Mutual Mistake?

(1) Both parties are mistaken about a basic assumption of fact, (2) the mistake goes to the core subject matter (not just value), and (3) the harmed party did not bear the risk.

A buyer and seller both believe a heavy resin object is a vintage bowling ball. On the first roll, it shatters because it is a delicate ceramic vase. Can the buyer rescind?

Yes. A mutual mistake of fact regarding the core identity and subject matter renders the agreement voidable.

When does a unilateral mistake allow a mistaken party to avoid a contract?

Only when the non-mistaken party knew or had reason to know of the error, or when enforcing the contract would yield an unconscionable result.

What defines economic duress in contract law?

Coercion where one party wrongfully threatens another's economic interests (e.g., threatening breach on trial eve) leaving no reasonable alternative but modification. A stick figure threatening another figure with a raised fist to force contract signing

What defines undue influence in contract formation?

Unfair persuasion exerted by a dominant party over a vulnerable party in a relationship of trust or fiduciary duty. A granddaughter persuading her elderly grandmother to sign over a house deed for one dollar